1 - 10 of 14 articles
In this paper, based on scattering theory, we study tunneling conductance in a nano layer which is located between an s-wave superconductor and a ferromagnetic metal. The model is a double junction system as FM/NM/SC, in which FM is a ferromagnetic metal with exchange field of h, SC is a spin...
The anomalous temperature dependence of the period of a torsional oscillator (TO) containing solid helium can be explained by the dislocation-vibration model. Namely, the dislocations in solid helium vibrate in phase with the torsional oscillation and the TO-period change varies as the square of...
Low temperature specific heat (C
) characterization on high-quality HgCr2Se4 single crystal was performed between 0.5 K and 10 K. The result provides conceivable evidence for the existence of competing ferromagnetic (FM) and antiferromagnetic (AFM) interactions in narrow temperature and...
We study the hydrodynamics of quantum 4He crystal oscillations in a superfluid liquid with involving the dynamics of atomically rough surfaces. It is shown that, due to enhancement of the kinetic growth coefficient as the temperature lowers, the reaction force of the liquid applied to the 4He...
We study low-lying excitations of a spinless homogeneous Bose gas with repulsive interaction at zero temperature in terms of the Gaussian mean field approximation. The dynamical equations of this approximation have been derived for small displacements from the static Hartree-Fock-Bogoliubov...
The thermal properties of La1−x
CoO3 (A = Ca, Ba and 0.0≤x≤0.3) for temperature (1 K≤T≤300 K) have been investigated using the Modified Rigid ion model (MRIM) with pair wise interionic interaction potential. The temperature dependent (1 K≤T≤300 K) variation of specific heat and thermal...
Polycrystalline samples of Y0.6Gd0.4Ba2−x
with different Nb contents (x=0.025, 0.075, 0.125, 0.175 and 0.225) were prepared using the solid state reaction method. Structural and electrical properties of new compounds were investigated with optical...
The ground state of the asymmetric Friedel-Anderson (aFA) impurity is calculated within the FAIR (Friedel artificially inserted resonance) theory. Its properties are investigated by means of the fidelity with different Friedel impurities and by its Friedel oscillations. Friedel impurities with a...
In practical applications, the acceleration and deceleration motions inevitably happen in the operation of high temperature superconducting (HTS) maglev trains. For further research of the maglev properties of YBaCuO bulk above a permanent magnet guideway (PMG), by moving a fixed vertical...
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